waldtest

factor.names

ForInternalUse

Frailtypack now fits several classes of frailty models
        using a penalized likelihood estimation on the hazard function
        but also a parametrical estimation. 1) A shared gamma frailty
        model and Cox proportional hazard model. Clustered and
        recurrent survival times can be studied (the
        Andersen-Gill(1982) approach has been implemented for recurrent
        events). An automatic choice of the smoothing parameter is
        possible using an approximated cross-validation procedure. 2)
        Additive frailty models for proportional hazard models with two
        correlated random effects (intercept random effect with random
        slope). 3) Nested frailty models for hierarchically clustered
        data (with 2 levels of clustering) by including two iid gamma
        random effects. 4) Joint frailty models in the context of joint
        modelling of recurrent events with terminal event. Prediction
        values are available. Left truncated, right-censored data,
        interval-censored data (only for Cox proportional hazard and
        shared frailty model) and strata (max=2) are allowed. The
        package includes concordance measures for Cox proportional
        hazards models and for shared frailty models.

ForInternalUse: For internal use only ...

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